Kimi Antonelli leads Lando Norris in Dutch Grand Prix first practice

Mercedes' Kimi Antonelli headed McLaren's Lando Norris in first practice at the Dutch Grand Prix.

Championship leader Antonelli was 0.121 seconds clear of Norris - who won the last race in Hungary before Formula 1's summer break - with the Italian's Mercedes team-mate George Russell just 0.004secs further adrift.

Ferrari's Lewis Hamilton, who is 50 points behind 19-year-old Antonelli in the championship, was fourth fastest - 0.190secs off the pace.

Hamilton's team-mate Charles Leclerc and the second McLaren of Oscar Piastri completed the top six.

There was an encouraging performance from the new Honda engine in the Aston Martin, with Fernando Alonso ending the session 12th fastest and 1.562secs down.

That appears at first sight to suggest the new engine is providing the 0.3-0.5secs gain in lap time for which Aston Martin had been hoping.

If so, it still leaves Honda some way behind the performance of the best engines - as the company itself admits - but it is a step forward from the first iteration of their power-unit Aston Martin have used until now.

Signs Honda are on the right track are what Alonso has been looking for as he ponders whether to stay in the sport beyond the end of the season.

Audi's Nico Hulkenberg was seventh, the quickest driver not to use the soft tyres, with Alpine's Pierre Gasly, the second Audi of Gabriel Bortoleto and Racing Bulls' Arvid Lindblad completing the top 10.

Red Bull's Max Verstappen could manage only 11th fastest, while his team-mate Liam Lawson, promoted from Racing Bulls after regular driver Isack Hadjar broke his wrist while boxing, was 14th.

A number of teams have chassis upgrades, notably Ferrari, who have brought a new floor to this race weekend hoping they can deliver on the potential they showed in Hungary last time, but which frittered away through strategy and operational errors.

At Alpine, only Gasly has the team's first major upgrade for some time, while McLaren and Aston Martin also have small aerodynamic upgrades - McLaren's around the rear bodywork and wing, and Aston Martin's the front wing.